US3570631A - Disc brake and adjusting means therefor - Google Patents

Disc brake and adjusting means therefor Download PDF

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Publication number
US3570631A
US3570631A US816259A US3570631DA US3570631A US 3570631 A US3570631 A US 3570631A US 816259 A US816259 A US 816259A US 3570631D A US3570631D A US 3570631DA US 3570631 A US3570631 A US 3570631A
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US
United States
Prior art keywords
rotor
disc brake
friction pad
piston
spaced
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US816259A
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English (en)
Inventor
Erich Schaftner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ernst Heinkel Flugzeugbau GmbH
Original Assignee
Ernst Heinkel Flugzeugbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ernst Heinkel Flugzeugbau GmbH filed Critical Ernst Heinkel Flugzeugbau GmbH
Application granted granted Critical
Publication of US3570631A publication Critical patent/US3570631A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • F16D65/095—Pivots or supporting members therefor
    • F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
    • F16D65/0973—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces
    • F16D65/0979—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces acting on the rear side of the pad or an element affixed thereto, e.g. spring clips securing the pad to the brake piston or caliper
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/38—Slack adjusters
    • F16D65/40—Slack adjusters mechanical
    • F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
    • F16D65/54—Slack adjusters mechanical self-acting in one direction for adjusting excessive play by means of direct linear adjustment

Definitions

  • a disc brake includes a rotor which is mounted [31] 690/68 for rotation about an axis in such a manner that under normal operating conditions the rotor has freedom to perform first wobbling movements within a first range of inclination to the [54] DISC BRAKE AND ADJUSTING MEANS axis, and to perform second wobbling movements within a THEREFOR larger second range of inclination to the axis under special 10 cl 4n i z second operating conditions. At least one friction pad is mounted proximal to the rotor for movement towards and Us.
  • the friction pad can engage the rotor for 1 188/196 braking rotation of the same, and is movable by the rotor to a [5 l 1 I a n fir t spaced position when the rotor performs [50] Freld of Search 188/71.7, movements, and to a second f th spaced position when the 196 (P), rotor performs its second wobhling movements Blassing [561 References Cited $2123 232123.”?31311535212riiiflie 215123. 253232: UNITED STATES PATENTS means serves to move the friction pad into engagement with 3,134,459 5/ 1964 Burnett et a1. 188/ 1 96P4X the rotor to normal operative position.
  • the present invention generally relates to brakes, and more The novel features which are considered as characteristic for the invention are set forth in particular in the appended claims.
  • the invention itself, however, both as to its construction and its method ,of operation, together with additional obparticularly to disc brakes. Still more specifically the invention .l and advantages thereof, will be best understood from the relates to disc brakes utilizing arrangements for maintaining the play between any friction pad or pads and the rotor substantially constant.
  • the present invention has as its general object to overcome these disadvantages.
  • the present invention has as its object to provide a disc brake which is not possessed of the aforementioned disadvantages and which is considerably simpler than the constructions known heretofore.
  • one feature of my invention resides in the provision of a disc brake wherein a rotor is mounted for rotation about an axis in such a manner that under normal first operating conditions the rotor has freedom to perform first wobbling movements within a first range of inclination to the axis, and under special second operating conditions, it has freedom to perform second wobbiing movements within a larger second range of inclination to the axis.
  • At least one friction pad is mounted proximal to the rotor for movement towards and away therefrom and is arranged to be moved from an operative position of frictional engagement with the rotor to a normal inoperative spaced position by contact with and in response to the rotor performing the first wobbling movements, and to a special inoperative farther spaced position in response to the rotor performing the second wobbling movements thereof.
  • Biassing means permanently biasses the friction pad from the special inoperative position to the normal inoperative position thereof, and actuating means is associated with the friction pad and is operable for urging the same from its normal inoperative position into the position of frictional engagement with the rotor.
  • FIG. 3 is a section taken through the upper part of a disc brake according to the present invention.
  • FIG. 2 is a fragmentary enlargement of the section shown in FIG. I and illustrating the brake in braking position;
  • FIG. 3 is a view similar to FIG. 2 but showing the brake in a normal inoperative spaced position
  • FIG. 4 is a view similar to FIGS. 2 and 3 but showing the brake in a special inoperative farther spaced position.
  • FIG. 1 DESCRIPTION OF THE PREFERRED EMBODIMENTS Discussing the drawing in detail, and firstly FIG. 1 thereof, it will be seen that I have illustrated therein the pertinent portions of a disc brake according to my invention.
  • This disc brake comprises a disc-shaped rotor 2 which is mounted for rotation about an axis paralleling the axis of the pin 16 shown in FIG. 1, but offset towards the right-hand side of the drawing. It is thought that the illustration is clear if it is kept in mind that the rotor 2 is of disc-shaped configuration.
  • the rotor 2 has opposite axially directed radial contact faces 4 which are juxtaposed with two friction pads 3 of known construction.
  • a carrier member 1 surrounds and straddles a portion of the periphery of the rotor 2 and carries one of the friction pads 3 on its arm 12 to which latter the friction pad 3 is connected via a washer 5 and a spring 7 which is located in a recess 9 in the arm 12.
  • the opposite arm 14 is configurated as a cylinder whose interior is identified with reference numeral 15 and wherein there is mounted for sliding movement a piston 13.
  • the upper friction pad 3 is carried at the exposed front face of the cylinder 13, again being connected thereto via a clamping spring 3 which is mounted in a recess 11 in the front face of the cylinder 13, and a washer 6.
  • a pressure medium is introduced in known manner into the interior space 15 of the cylinder M, and serves to displace the piston 13 in the direction towards the rotor 2. This results in pushing the friction pad 3 carried by the piston 13 into engagement with the contact face 4, and at the same time pulling the other friction pad 3 into engagement with the opposite contact face 4.
  • the normal tumbling or wobbling movement of the rotor 2 about its axis of rotation serves to push the friction pads 3 away from the contact faces 4 and to their normal inoperative position.
  • the rotor 2 temporarily performs wobbling movements within a greater range of inclination to its axis of rotation than normal.
  • at least one of the friction pads 3, that is the one carried by the piston 13 may be pushed away from the rotor 2 farther than is ordinarily the case. This in turn provides for a longer play inthe actuating member which must be operated by the vehicle operator, before the brake will become activated, and this is of course not desirable.
  • In accordance with the present invention 1 provide an arrangement for restoring the friction pad 3 which has thus been moved farther away from the rotor 2 under these special operating condition, to its normal spaced position.
  • I provide a pin or bolt 16 the rear portion 17 of which is received in a depression l8 provided in the end wall bounding the bore or interior 35 of the cylinder 14.
  • the longer front portion 21 of the pin 16 is similarly received in a bore 22 provided in the piston 13.
  • Blocking members 23 serve to retain the front portion 211 in the piston 13, or rather in the bore 22 provided in the piston 13.
  • These blocking elements 23 are mounted firmly but longitudinally slidably on the front portion 21 of the pin 16 and are held between the end face 24 of an enlarged part of the bore 22 and an annular member 26 which is retained in this enlarged part by the upset head 27 of the piston 13.
  • the shorter rear portion 17 of the pin 16 is surrounded by a helical compression spring 28 which abuts against the end surface 29 of the recess 18 on the one hand, and on the other hand against an abutment member 31 so that the pin is shiftably mounted between piston and cylinder via the members 23.
  • the abutment member 31 can be moved in direction towards the end surface 29 of the recess 18 under simultaneous compressing of the spring 28. This is accomplished by the flange 33 a surface 32 of which faces the abutment member 31, and which flange 33 is provided ori the pin 16 immovable relative thereto.
  • nonoperated condition of the brake that is if no pressure fluid is in the interior 15, 18 of the cylinder 14, the flange 33 is located intermediate the abutment member 31 and a shoulder 34 on the cylinder 14. This position is illustrated in FIG. 3 and it will be appreciated that when at the initiation of braking action the friction pads 3 contact the contact surfaces 4 of the rotor 2, the face 35 provided on the flange 33 will abut against the shoulder 34. This is shown in FIG. 2.
  • a distance x is provided between the abutment surface 32 of the flange 33 and the surface 36 of the abutment member 31. This distance it corresponds to the normal range of inclination of the rotor 2 when the same performs normal wobbling movements. Under the aforementioned special operating conditions the rotor can perform special larger wobbling movements whose maximum range is assumed or empirically determined and identified in FIG. 2 with y.
  • the rear end of the portion 17 of the pin 16 is normally spaced from the end surface 29 of the recess 18 by a distance 37 corresponding to the sum of the distances x and y.
  • the pin 16 can be shifted towards the end surface 28 29 to an extent corresponding to the distance 37, that is until its rear face 38 contacts the end surface 29 as shown in FIG. 4.
  • the spring 28 be so configurated that when it is compressed as in FIG. 4, its convolutions will still not be in abutment with one another.
  • the abutment member 31 is in form of an annulus which is guided in the recess 18 and is provided in its periphery with cutouts 39 through which air may pass for pressure-equalizing purposes.
  • the spring 28 abuts whereas the abutment face 32 of the flange 33 will abut against the opposite side or surface 36 of the abutment member 31.
  • the shoulder 34 of the cylinder 14 is provided in that the interior of the cylinder is formed with a stepped-shaped recess 42 in which there is located a plate member 43 which is held in place by upsetting the material of the cylinder 14 as shown at 44.
  • the plate member 43 through which the pin 16 extends, is provided with projections 85 extending towards the end surface 29 and having a length which corresponds to the sum of the axial thickness 46 of the flange 33 and the distance x (see FIG. 2). Cutouts 47 provided in the plate member 43 serve to permit passage of air therethrough. This is necessary to assure proper ventilation of the recess 18.
  • the end face 24 is provided with grooves 48 and the annular member 26 with kerfs 49.
  • the invention will serve to restore the friction pad or pads to their normal inoperative position that is to the position to which they have been shifted when the rotor 2 resumes normal wobbling movements after braking is terminated from their special inoperative position to which they may have been shifted when the rotor 2 temporarily performs special or second wobbling movements in which its range of inclination to its axis of rotation is greater than under normal operating conditions.
  • a disc-shaped rotor having a radial face and being mounted for rotation about an axis in such a manner that under normal first operating conditions the rotor has freedom to perform first wobbling movements within a first range of inclination to said axis, and under special second operating conditions to perform second wobbling movements within a larger second range of inclination to said axis; a mounting element straddling a portion of the rotor periphery and having an arm provided with a blind bore normal to said radial face and having an open end facing the latter; a piston slidably mounted in said bore and having a leading end facing said radial face and a trailing end formed with an axial bore, and pressure means communicating with said blind bore for effecting sliding movement of said piston; at least one friction pad mounted on said leading end of said piston proximal to said rotor for movement towards and away therefrom, said pad being arranged to be moved together with said piston from an operative position of frictional engagement with said
  • a disc brake as defined in claim 2 further comprising an annular limiting member in said bore intermediate said piston and said abutment member, said flange being located intermediate and spaced from said limiting member and said abutment member in nonoperated condition of said actuating means, and abutting against said limiting member in the operated condition of said actuating means.
  • abutment member being an annular member having a peripheral margin provided with pressure-equalization cutouts.
  • said endwall being provided with a recessed step surrounding the mouth of said recess; and further comprising an annular limiting member received in said recessed step and arranged for abutment thereagainst of said flange when said friction pad is in said normal inoperative position thereof, said limiting member comprising axial projections extending into said recess radially spaced from said flange and having a length corresponding to the sum of the axial thickness of said flange and the distance between said operative and said normal inoperative position of said friction pad.
  • said recess having an end surface, and said rear part being spaced from said end sur face by a distance corresponding to the distance between said operative position and said special inoperative position, when said friction pad is in said operative position.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
US816259A 1968-04-16 1969-04-15 Disc brake and adjusting means therefor Expired - Lifetime US3570631A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT369068A AT280079B (de) 1968-04-16 1968-04-16 Scheibenbremse

Publications (1)

Publication Number Publication Date
US3570631A true US3570631A (en) 1971-03-16

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ID=3554045

Family Applications (1)

Application Number Title Priority Date Filing Date
US816259A Expired - Lifetime US3570631A (en) 1968-04-16 1969-04-15 Disc brake and adjusting means therefor

Country Status (6)

Country Link
US (1) US3570631A (enExample)
JP (1) JPS4945269B1 (enExample)
AT (1) AT280079B (enExample)
DE (1) DE1803246A1 (enExample)
FR (1) FR2006265A1 (enExample)
GB (1) GB1215671A (enExample)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5031383U (enExample) * 1973-07-18 1975-04-07
US4108284A (en) * 1975-06-09 1978-08-22 Girling Limited Railway brake assemblies including knock-back compensating means
US20150008079A1 (en) * 2012-03-26 2015-01-08 Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh Disc Brake for a Commercial Vehicle
US20150053510A1 (en) * 2012-08-06 2015-02-26 Kayaba Industry Co., Ltd. Caliper brake apparatus

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4082166A (en) * 1977-02-01 1978-04-04 The Bendix Corporation Disc brake having retention device
JPS5488580A (en) * 1977-12-23 1979-07-13 Tsubakimoto Chain Co Device for storing overhead conveyor
DE2925275A1 (de) * 1979-06-22 1981-01-08 Perrot Bremse Gmbh Deutsche Scheibenbremse
DE3237515A1 (de) * 1982-10-09 1984-04-12 Alfred Teves Gmbh, 6000 Frankfurt Teilbelagscheibenbremse, insbesondere fuer kraftfahrzeuge
GB2282648B (en) * 1993-10-09 1997-09-17 Automotive Products Plc Disc brake caliper
DE4340454A1 (de) * 1993-11-27 1995-06-01 Teves Gmbh Alfred Bremsbelagsatz für Schwimmsattel-Scheibenbremse
DE10012146A1 (de) * 2000-03-13 2001-09-20 Zahnradfabrik Friedrichshafen Nachstellvorrichtung
FR3127896A1 (fr) 2021-10-12 2023-04-14 Compagnie Generale Des Etablissements Michelin Mélangeur inversé pour fabriquer un mélange de caoutchouc

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3134459A (en) * 1960-10-20 1964-05-26 Bendix Corp Caliper type spot brake
US3200911A (en) * 1960-11-16 1965-08-17 Teves Kg Alfred Hydraulic cylinder assembly for disc brakes
US3240296A (en) * 1959-11-12 1966-03-15 Dba Sa Automatic adjusting and kickback device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3240296A (en) * 1959-11-12 1966-03-15 Dba Sa Automatic adjusting and kickback device
US3134459A (en) * 1960-10-20 1964-05-26 Bendix Corp Caliper type spot brake
US3200911A (en) * 1960-11-16 1965-08-17 Teves Kg Alfred Hydraulic cylinder assembly for disc brakes

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5031383U (enExample) * 1973-07-18 1975-04-07
US4108284A (en) * 1975-06-09 1978-08-22 Girling Limited Railway brake assemblies including knock-back compensating means
US20150008079A1 (en) * 2012-03-26 2015-01-08 Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh Disc Brake for a Commercial Vehicle
US9551390B2 (en) * 2012-03-26 2017-01-24 Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh Disc brake for a commercial vehicle
US20150053510A1 (en) * 2012-08-06 2015-02-26 Kayaba Industry Co., Ltd. Caliper brake apparatus
US9651106B2 (en) * 2012-08-06 2017-05-16 Kyb Corporation Caliper brake apparatus

Also Published As

Publication number Publication date
DE1803246A1 (de) 1969-10-23
AT280079B (de) 1970-03-25
FR2006265A1 (enExample) 1969-12-26
JPS4945269B1 (enExample) 1974-12-03
GB1215671A (en) 1970-12-16

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